3961108278203 has 2 divisors, whose sum is σ = 3961108278204. Its totient is φ = 3961108278202.

The previous prime is 3961108278079. The next prime is 3961108278313. The reversal of 3961108278203 is 3028728011693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3961108278203 - 2¹⁰ = 3961108277179 is a prime.

It is not a weakly prime, because it can be changed into another prime (3961105278203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1980554139101 + 1980554139102.

It is an arithmetic number, because the mean of its divisors is an integer number (1980554139102).

Almost surely, 2^{3961108278203} is an apocalyptic number.

3961108278203 is a deficient number, since it is larger than the sum of its proper divisors (1).

3961108278203 is an equidigital number, since it uses as much as digits as its factorization.

3961108278203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 3961108278203 in words is "three trillion, nine hundred sixty-one billion, one hundred eight million, two hundred seventy-eight thousand, two hundred three".